Industrial design hand-drawn expression is a two-dimensional into three-dimensional process, strictly speaking, industrial design hand-drawn contains both two-dimensional and three-dimensional. Because in the drawing process, you need to have the ability to convert two-dimensional bit three-dimensional, you need to draw the three views of the product: left view, front view, top view, and then in the drawing of the product two different angles and the most expressive of the product characteristics of the effect, the more commonly used is the first forty-five degrees
. Finally, according to the use of the product, draw the use of the scene map, fully express the product characteristics. If you have the ability, you can also draw the product explosion diagram, that is, the product of the various parts of the split, so that the various components of the product at a glance.